Organic titanium epoxy resin catalytic ester cyanate system
A technology of titanium epoxy resin and catalyzed cyanate ester, which is applied in the field of organotitanium epoxy resin catalyzed cyanate ester resin system, which can solve the problem of heat resistance of cured resin, decline in heat and humidity resistance, and shortened storage period of the resin system at room temperature And other issues
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Example Embodiment
[0012] Example one:
[0013] Take 99.99 parts of bisphenol A cyanate, heat to 80°C to melt completely, then add 0.01 parts of organic titanium modified E44 bisphenol A glycidyl ether epoxy resin (the molar ratio of titanium atom to cyanate ester functional group is 100 ppm), And stir well. The DSC reaction peak temperature of the resin system was 269℃, and after curing at 200℃ for 2h, the glass transition temperature of the cured resin was 235℃; after curing at 250℃ for 2h, the glass transition temperature of the resin was 267℃.
Example Embodiment
[0014] Embodiment two:
[0015] Take 99.9 parts of bisphenol A cyanate, heat it to 80°C to melt completely, then add 0.1 part of organotitanium modified E44 bisphenol A glycidyl ether epoxy resin (the molar ratio of titanium atom to cyanate functional group is 800ppm), And stir well. The DSC reaction peak temperature of this resin system is 230 ℃, curing at 150 ℃ for 2 hours, the glass transition temperature of the cured resin is 180 ℃; after curing at 200 ℃ for 2 hours, the glass transition temperature of the resin is 232 ℃; at 250 After curing at ℃ for 2h, the glass transition temperature of the resin is 265℃.
Example Embodiment
[0016] Embodiment three:
[0017] Take 99.7 parts of bisphenol A cyanate, heat it to 80°C to melt completely, then add 0.3 parts of organic titanium modified E44 bisphenol A glycidyl ether epoxy resin (the molar ratio of titanium atom to cyanate ester functional group is 1500 ppm), And stir well. The DSC reaction peak temperature of the resin system is 186°C, and the glass transition temperature of the resin is 141°C after curing at 130°C for 2h; after curing at 200°C for 2h, the glass transition temperature of the resin is 227°C; at 250°C After curing for 2h, the glass transition temperature of the resin is 259℃.
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